The Shadow of Your Smile was written by
Johnny Mandel (music) and
Paul Francis Webster (lyrics) in 1965, and was featured in the film
The Sandpiper. It won the
Grammy Award for Song of the Year and the
Academy Award for Best Original Song. Famous cover versions include the one by
Barbra Streisand (1965).

This is the beginning of the song. After some pickup notes (the first five notes), the melody lands onto a note with an
accidental at the head of the first bar (where you sing "smile"). In a sense, this is an abrupt way to introduce accidentals in a melody, but it's also what makes this song so charming and distinguishable.

And here's when the melody reaches its highest note. You see a continuing pattern of two identical melodic figures - the "
Now when I remem.." part and the "
all the joy that love" part. They both follow the same descend-ascend order.
(Lyrics excerpt)
The shadow of your smile when you are gone
Will color all my dreams and light the dawn
Look into my eyes, my love, and see
All the lovely things you are to me